The leghaemoglobin surrounding the bacteroids serves a dual role . 类菌体四周的豆血红蛋白执行双重职能。
2.
Bacteroid a modified bacterial cell in a root nodule , typically a cell of the bacterium rhizobium in the root nudule of a leguminous plant ( family fabaceae ) 类细菌：在根瘤中经过修饰的细菌细胞，比较典型的是在豆科植物根瘤中的根瘤菌（蝶形花科） 。
